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Weather conditions on bar directly above are near Lakefront. Tabs under Moon Phases refer to O'Hare (official).

Archives for SPC Convective outlook are updated daily with a live map a the beginning of the article. Touch or click map to get possible update, and follow link at end of article for referral to NOAA/NWS Storm Prediction Center. Archives for Chicago's hourly weather data were updated 24-48 hours after end of each day prior to Dec. 2020.

Saturday, July 16, 2022

SPC Jul 16, 2022 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0301 AM CDT Sat Jul 16 2022 Valid 191200Z - 241200Z ...DISCUSSION... Medium-range model guidance continues to highlight the potential for severe thunderstorms across the Upper Midwest and western Great Lakes on Tuesday (day 4). A powerful mid-level shortwave trough is forecast to move from the ND/MT/Saskatchewan border east-southeastward into the western Great Lakes on Day 4 and subsequently into the central Great Lakes by Wednesday night. A reservoir of rich low-level moisture will likely encompass much of the Midwest into the Great Lakes and Northeast during the Tuesday-Thursday timeframe. Mesoscale details are still uncertain at this time. However, will maintain a highlight over the Upper Midwest/western Great Lakes on Tuesday due to above-average confidence in severe potential. Read more CHECK UPDATE ZOOM GRAPHIC
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